/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
  if (arguments.length === 0 || !time) {
    return null;
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
  let date;
  if (typeof time === 'object') {
    date = time;
  } else {
    if (typeof time === 'string') {
      if (/^[0-9]+$/.test(time)) {
        // support "1548221490638"
        time = parseInt(time);
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), '/');
      }
    }

    if (typeof time === 'number' && time.toString().length === 10) {
      time = time * 1000;
    }
    date = new Date(time);
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  };
  const time_str = format.replace(
    /{([ymdhisa])+}/g,
    (result, key) => {
      const value = formatObj[key];
      // Note: getDay() returns 0 on Sunday
      if (key === 'a') {
        return ['日', '一', '二', '三', '四', '五', '六'][value];
      }
      return value.toString().padStart(2, '0');
    }
  );
  return time_str;
}

/**
 * 全角转半角
 * @param {*} str 
 * @returns 
 */
export function ToCDB(str) {
  const reg = /[^\uff00-\uffff]/g
  if (reg.test(str)) {
    return str
  }
  var tmp = "";
  for (var i = 0; i < str.length; i++) {
    if (str.charCodeAt(i) > 65248 && str.charCodeAt(i) < 65375) {
      tmp += String.fromCharCode(str.charCodeAt(i) - 65248);
    }
    else {
      tmp += String.fromCharCode(str.charCodeAt(i));
    }
  }
  return tmp
}